Start in extended desktop mode if it is enabled.

chromeos/display/output_configurator.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_
 #define CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_
 
 #include "base/basictypes.h"
 #include "base/event_types.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 22 matching lines @@
   STATE_DUAL_PRIMARY_ONLY,
   STATE_DUAL_SECONDARY_ONLY,
 };
 
 // This class interacts directly with the underlying Xrandr API to manipulate
 // CTRCs and Outputs.  It will likely grow more state, over time, or expose
 // Output info in other ways as more of the Chrome display code grows up around
 // it.
 class CHROMEOS_EXPORT OutputConfigurator : public MessageLoop::Dispatcher {
  public:
-  OutputConfigurator();
+  explicit OutputConfigurator(bool is_extended_display_enabled);
   virtual ~OutputConfigurator();
 
   OutputState output_state() const { return output_state_; }
 
   // Called when the user hits ctrl-F4 to request a display mode change.
   // This method should only return false if it was called in a single-head or
   // headless mode.
-  bool CycleDisplayMode(bool extended_desktop_enabled);
+  bool CycleDisplayMode();
 
   // Called when powerd notifies us that some set of displays should be turned
   // on or off.  This requires enabling or disabling the CRTC associated with
   // the display(s) in question so that the low power state is engaged.
   bool ScreenPowerSet(bool power_on, bool all_displays);
 
   // Force switching the display mode to |new_state|.  This method is used when
   // the user explicitly changes the display mode in the options UI.  Returns
   // false if it was called in a single-head or headless mode.
   bool SetDisplayMode(OutputState new_state);
@@ skipping 62 matching lines @@
   // with the result.
   void CheckIsProjectingAndNotify();
 
   // This is detected by the constructor to determine whether or not we should
   // be enabled.  If we aren't running on ChromeOS, we can't assume that the
   // Xrandr X11 extension is supported.
   // If this flag is set to false, any attempts to change the output
   // configuration to immediately fail without changing the state.
   bool is_running_on_chrome_os_;
 
+  // Set to true if the extended display flag is enabled.
+  bool is_extended_display_enabled_;

[sky, 2012/07/31 23:42:19]

const

+
   // The number of outputs in the output_cache_ array.
   int output_count_;
 
   // The list of cached output descriptions (|output_count_| elements long).
   scoped_array<CachedOutputDescription> output_cache_;
 
   // True if |output_cache_| describes a permutation of outputs which support a
   // mirrored device mode.
   bool mirror_supported_;
 
@@ skipping 13 matching lines @@
   // The display state as derived from the outputs observed in |output_cache_|.
   // This is used for rotating display modes.
   OutputState output_state_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputConfigurator);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_